Gree GMV5 - Page 223

GREE Photovoltaic Direct-driven Inverter Multi VRF Units
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Troubleshooting:
2.3.4.81 “H7” Fan drive temperature sensor error
Error display:
ODU mainboard will display
Error judgment condition and method:
Check the error code on nixie tube of ODU main control board. If H7 is displayed, it indicates fan
drive temperature sensor error
Possible reason
：
■Fan drive board is abnormal